which name db file? xCAT makedns will modify /etc/named.conf, which
include domain and network interface defined in the network table.
make sure you add master ip address to the /etc/resolv.conf. , then try
nslookup command.
Thanks,
Casandra
...................................................................
Casandra Hong Qiu
Phone: (845) 433-9291, t/l 293-9291
Office: Building 8, 3-B-04
cxh...@us.ibm.com
From: "Huette, Antoine" <antoine.hue...@bechtle.com>
To: xCAT Users list <xcat-user@lists.sourceforge.net>
Date: 06/24/2020 08:57 AM
Subject: [EXTERNAL] Re: [xcat-user] Compute node deployment on centos
8.1
I discovered reverse DNS seem not to work properly, because testing « host
<compute_node_ip> » says : not found.
The corresponding named db file only contains the master node, is it
supposed to also have all compute nodes ?
Isn’t the DNS server configuration handled by xcat ? The site dns
attributes seem to be correct.
Best regards
Antoine Huette
HPC engineer
Bechtle
> Le 24 juin 2020 à 10:55, Huette, Antoine <antoine.hue...@bechtle.com> a
écrit :
>
> Hello,
>
> We have some issues deploying compute nodes on a CentOS 8.1 cluster with
xCAT 2.16.
>
> First, OS installation takes a lot of time, in the xcat.log file there
are a lot of « updateflag.awk : retrying flag update » messages after the
confignetwork postscript execution. They last for about 17 minutes.
>
> Then, there are also issues when attempting to deploy an osimage to the
compute nodes. Some attempts fail to happen, the node will just boot from
hard drive without reason. When installing multiple nodes at once, a lot of
them will fail to boot the installer environment, and will instead boot to
emergency mode. This issue is resolved by rebooting the faulty nodes until
the installation is successful.
>
> Does anyone know what could be the cause for these issues ? It looks like
there is a network problem here but I’m not sure where to look at...
>
> By the way, the compute nodes are configured to have bonded interfaces on
the main internal network that is also used for OS deployment. Are there
any considerations or special configuration to be done in that case ? The
bonding is successfully configured and fonctional at boot.
>
>
> Best regards,
>
> Antoine Huette
> HPC engineer
> Bechtle
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